"Photo management programs such as Picasa and iPhoto can pick out a snapshot of your cousin Dave from a stack of party pictures — but what about more complex uses of facial recognition in less controlled situations? In this segment, we’ll take a look at the state of the art in facial recognition, from ‘Google Goggles’ that give you additional information about things your cell phone camera sees, to security applications that scan faces at airports. How good is the technology, and how can it be employed while respecting privacy concerns?"
From http://www.sciencefriday.com/program/archives/201001226